Q: Will this work in place of the Aruba S3N89A?
A: Yes. The S3N89A-BCC is engineered to the same 100GBASE-LR specification, operates on the same 1310nm wavelength, and uses the same QSFP28 form factor as the Aruba S3N89A. It is plug-and-play compatible and recognized by the host platform on insertion.

Q: Which Aruba platforms support this transceiver?
A: This module is compatible with Aruba switches equipped with QSFP28 ports that support 100GBASE-LR transceivers, including models in the CX 6300, CX 8325, and CX 8360 families. Consult the Aruba CX Operating System Transceiver Guide to confirm software version requirements for your specific switch model.

Q: What type of fibre is required for 10km reach?
A: This transceiver requires standard single-mode fibre (OS2 recommended, G.652 compliant). Maximum reach depends on fibre quality, splice loss, and connector insertion loss. The IEEE 802.3ba specification for 100GBASE-LR defines a link budget that accommodates typical enterprise and data centre fibre plants up to 10km.

Q: Can I access DOM parameters on Aruba switches?
A: Yes. The module supports the SFF-8636 digital diagnostics specification. On AOS-CX platforms, use CLI commands such as 'show interface transceiver' to display real-time optical power levels, temperature, voltage, and TX bias current. This data enables proactive identification of degraded optics or fibre plant issues before link failure.

Q: Does this transceiver require forward error correction (FEC) to be enabled?
A: 100GBASE-LR typically operates without FEC on clean fibre links within the specified 10km budget. However, some switch platforms enable FEC by default on 100G ports. If link negotiation fails, verify FEC settings match on both ends of the connection or set both to auto-negotiate per IEEE 802.3 Clause 91.